Acura RSX Honda Integra. Manual — part 233
01
S6M6A02E10410800000CAAT04
Hydraulic Controls
Valve Bodies
14-57
SHIFT SOLENOID
VALVE A
SERVO BODY
MAIN VALVE BODY
REGULATOR
VALVE BODY
A/T CLUTCH PRESSURE
CONTROL SOLENOID
VALVE B
A/T CLUTCH PRESSURE
CONTROL SOLENOID
VALVE A
SHIFT SOLENOID
VALVE D
SHIFT SOLENOID
VALVE B
SHIFT
SOLENOID
VALVE E
SHIFT
SOLENOID
VALVE C
A/T CLUTCH PRESSURE
CONTROL SOLENOID
VALVE C
The valve body includes the main valve body, the regulator valve body, and the servo body. The ATF pump is driven
by splines on the left end of the torque converter which is attached to the engine. Fluid flows through the regulator
valve to maintain specified pressure through the main valve body to the manual valve, directing pressure to the shift
valves and to each of the clutches via the solenoid valves. The shift solenoid valves A, B, C, D, and E are bolted on the
servo body. The A/T clutch pressure control solenoid valves A, B, and C are mounted on the outside of the
transmission housing.
(cont’d)
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07
02
Hydraulic Controls (cont’d)
Main Valve Body
Regulator Valve Body
14-58
Automatic Transmission
System Description (cont’d)
SHIFT VALVE A
MAIN VALVE BODY
SHIFT VALVE B
SHIFT VALVE C
COOLER CHECK VALVE
LOCK-UP CONTROL VALVE
SHIFT VALVE E
SERVO CONTROL VALVE
RELIEF VALVE
MANUAL VALVE
REGULATOR VALVE BODY
LOCK-UP SHIFT VALVE
REGULATOR VALVE
TORQUE CONVERTER
CHECK VALVE
The main valve body contains the manual valve, the shift valves A, B, C, and E, the relief valve, the lock-up control
valve, the cooler check valve, the servo control valve, and the ATF pump gears. The primary function of the main valve
body is to switch fluid pressure on and off, and to control hydraulic pressure going to the hydraulic control system.
The regulator valve body contains the regulator valve, the torque converter check valve, lock-up shift valve, and the
1st and 3rd accumulators.
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01
02
Regulator Valve
14-59
To TORQUE
CONVERTER
From ATF PUMP
To LUBRICATION and
To RELEIF VALVE
B’
B
A
ORIFICE
REGULATOR VALVE
VALVE SPRING
STATOR
STATOR SHAFT
STATOR SHAFT ARM END
REGULATOR
SPRING CAP
REGULATOR
VALVE BODY
REGULATOR VALVE
TORQUE CONVERTER
The regulator valve maintains a constant hydraulic pressure from the ATF pump to the hydraulic control system, while
also furnishing fluid to the lubrication system and torque converter. Fluid from the ATF pump flows through B and B’.
Fluid entering from B flows through the valve orifice to the A cavity. This pressure of the A cavity pushes the regulator
valve to the right side, and this movement of the regulator valve uncovers the fluid port to the torque converter and
the relief valve. The fluid flows out to the torque converter and the relief valve, and the regulator valve moves to the
left side. According to the level of the hydraulic pressure through B, the position of the regulator valve changes, and
the amount of fluid from B’ through torque converter also changes. This operation is continued, maintaining the line
pressure.
NOTE: When used, ‘‘left’’ or ‘‘right’’ indicates direction on the illustration.
Increases in hydraulic pressure according to torque are performed by the regulator valve using stator torque reaction.
The stator shaft is splined with the stator in the torque converter, and its arm end contacts the regulator spring cap.
When the vehicle is accelerating or climbing (torque converter range), stator torque reaction acts on the stator shaft,
and the stator arm pushes the regulator spring cap in the direction of the arrow in proportion to the reaction. The
stator reaction spring compresses, and the regulator valve moves to increase the line pressure which is regulated by
the regulator valve. The line pressure reaches its maximum when the stator torque reaction reaches its maximum.
(cont’d)
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03
04
Hydraulic Controls (cont’d)
Servo Body
Accumulator
14-60
Automatic Transmission
System Description (cont’d)
SHIFT SOLENOID VALVE D
SERVO BODY
SERVO VALVE
SHIFT VALVE D
SHIFT SOLENOID VALVE E
SHIFT SOLENOID VALVE C
SHIFT SOLENOID VALVE A
SHIFT SOLENOID VALVE B
5TH ACCUMULATOR
3RD ACCUMULATOR
1ST ACCUMULATOR
REGULATOR VALVE BODY
4TH ACCUMULATOR
2ND ACCUMULATOR
SERVO BODY
The servo body contains the servo valve, the shift valve D, accumulators for 2nd, 4th, and 5th, and shift solenoid
valves for A, B, C, D, and E.
The accumulators are located in the regulator valve body and the servo body. The regulator valve body contains the
1st and 3rd accumulators, and the servo body contains the 2nd, 4th, and 5th accumulators.
05/06/27 17:49:07 61S6M040_140_0061
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